octane and timing
11-17-2008, 01:12 AM
#7
6th Gear Member
Join Date: May 2004
Location: las vegas, nv
Posts: 9,092
i think you have it backwards. the lower the octane the more power you make. high octane burns slower therefor makes less power. the only reason for running higher octane is to allow for more timing or compression/boost which is what makes more power, not the octane of the fuel.
with that said, just try it. every motor is different. just because some one else got away with it or didnt, doesnt mean you can/cant get away with it.
11-17-2008, 09:20 AM
#8
3rd Gear Member
Join Date: Aug 2006
Location: North East Texas on the Red River
Posts: 886
[QUOTE=luckythirteen13;5657661]i think you have it backwards. the lower the octane the more power you make. high octane burns slower therefor makes less power. the only reason for running higher octane is to allow for more timing or compression/boost which is what makes more power, not the octane of the fuel.
with that said, just try it. every motor is different. just because some one else got away with it or didnt, doesnt mean you can/cant get away with it.[/QUOTE/]
HUH?.........
Yes, higher octane fuel burns slower which allows you to advance the timing. Faster burning fuel causes pressure spikes which is basically engine destroying detonation. The slower burning, higher octane fuel allows you to advance the timing which increases combustion efficiency which leads to power AND fuel efficiency gains.
There is no significant or probably even measurable difference in the amount of energy available in like quantities of varying octane fuels. Where the difference comes in is that higher octane fuel tolerates higher compression ratios and more advanced timing WITHOUT engine killing detonation. Higher compression and more advanced timing is what produces the increases in power and fuel efficiency.
with that said, just try it. every motor is different. just because some one else got away with it or didnt, doesnt mean you can/cant get away with it.[/QUOTE/]
HUH?.........
Yes, higher octane fuel burns slower which allows you to advance the timing. Faster burning fuel causes pressure spikes which is basically engine destroying detonation. The slower burning, higher octane fuel allows you to advance the timing which increases combustion efficiency which leads to power AND fuel efficiency gains.
There is no significant or probably even measurable difference in the amount of energy available in like quantities of varying octane fuels. Where the difference comes in is that higher octane fuel tolerates higher compression ratios and more advanced timing WITHOUT engine killing detonation. Higher compression and more advanced timing is what produces the increases in power and fuel efficiency.
11-17-2008, 10:30 AM
#9
6th Gear Member
Join Date: May 2004
Location: las vegas, nv
Posts: 9,092
[QUOTE=MBDiagMan;5658167]
thats pretty much exactly what i said, you just worded it better. i had a few drinks in me last night when i was posting
i think you have it backwards. the lower the octane the more power you make. high octane burns slower therefor makes less power. the only reason for running higher octane is to allow for more timing or compression/boost which is what makes more power, not the octane of the fuel.
with that said, just try it. every motor is different. just because some one else got away with it or didnt, doesnt mean you can/cant get away with it.[/QUOTE/]
HUH?.........
Yes, higher octane fuel burns slower which allows you to advance the timing. Faster burning fuel causes pressure spikes which is basically engine destroying detonation. The slower burning, higher octane fuel allows you to advance the timing which increases combustion efficiency which leads to power AND fuel efficiency gains.
There is no significant or probably even measurable difference in the amount of energy available in like quantities of varying octane fuels. Where the difference comes in is that higher octane fuel tolerates higher compression ratios and more advanced timing WITHOUT engine killing detonation. Higher compression and more advanced timing is what produces the increases in power and fuel efficiency.
with that said, just try it. every motor is different. just because some one else got away with it or didnt, doesnt mean you can/cant get away with it.[/QUOTE/]
HUH?.........
Yes, higher octane fuel burns slower which allows you to advance the timing. Faster burning fuel causes pressure spikes which is basically engine destroying detonation. The slower burning, higher octane fuel allows you to advance the timing which increases combustion efficiency which leads to power AND fuel efficiency gains.
There is no significant or probably even measurable difference in the amount of energy available in like quantities of varying octane fuels. Where the difference comes in is that higher octane fuel tolerates higher compression ratios and more advanced timing WITHOUT engine killing detonation. Higher compression and more advanced timing is what produces the increases in power and fuel efficiency.
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